Question

Which of the following statements is correct for any thermodynamic system?

Options

• The internal energy changes in all processes.

• Internal energy and entropy are state functions.

• The charge in entropy can never be zero.

• The work done in an adiabatic process is always zero.

Answer 1

Internal energy and entropy are state functions.

Explanation:

The isothermal process has no effect on internal energy. As entropy is a measure of the disorder of molecular motion of the system. For the adiabatic process, ΔS can be zero. In adiabatic, work may be non-zero.

Internal energy and entropy, on the other hand, are state functions.